Cylinder-drying machine



J. McINTYRE.

CYLINDER urn ma MACHINE.

APPLICATION FILED JUNE 12, I9I9..

Patented July 5,1921.

Ian/e 12 for cjairz 272 11223 of the two feed rolls PATENT OFFICE.

JOHN MGINTYRE, OE IE'ORTOBELLO, SCOT V MILNE AND SON LIMITED,

LAND, ASSIGNOB 0F GIVE-HALF TO JAIVIES OF EDINBURGH, SCOTLAND.

CYLINDEEDRYING MACHINE.

To all whom it may concern:

Be it known that I, JOHN MCINTYRE, of 28 Brighton Place, Portobello, Midlothian, Scotland, have invented certain new and useful Cylinder-Drying Machines, of which the following is a specification.

This invention has for its object to provide an improved and simple apparatus for super-imposing films of material to be dried on to a pair of heated rotating cylinders and which apparatus will be equally effectual when dealing with and evaporating moisture from solids such as potatoes or other roots, vegetables, pastes, liquids and semi-liquids and consists in the means of applying the material being treated at different points on the surface of the rotating drying cylinders in order to increase the thickness of the film, all as hereinafter more particularly described with reference to the drawing and pointed out in the claims.

In order that my invention may be properly understood and more readily carried into effect I have hereunto appended one form of putting into effect this invention, in Which-I have shown the material being applied at three different points, although it may be applied at more if desired.

The material to be dried is deflected on a chute or hopper D, to the outside surface E, F, by which it is conveyed and deposited on to the outside surface of the revolving drying cylinders A, B at the points 1. Said cylinders are ar ranged to rotate in reverse directions. The material adheres to the feed rolls during a portion of their rotation and is scraped therefrom by the adjustable scrapers marked and caused to drop to the opposing surfaces of the drying cylinders A, and B at the point 2. Said cylinders revolve in contiguity with each other so that during the course of their rotation the material is deposited in the form of a film on the exterior surfaces of the cylinders and is Specification of Letters Patent.

Application filed June 12, 1919.

Patented July 5, 1921. Serial No. 303,800.

scraped off by scrapers G, H. It will be readily understood that auxiliary distributlng rolls such as those shown at I, and J, enable the material under treatment to be fed to the drying cylinders A, B, at supplementary or subsequent points 3 by which the material is heated between those points, lmparting to the film in course of rotation additional layers of deposit.

Although I have shown the apparatus adapted to work according to an open type it is to be understood the apparatus may be worked in a vacuum.

Claims:

1. A pair of drying cylinders arranged to rotate in reverse directions, a pair of feed rolls arranged in spaced relation and each roll in contact with the upper side of one of the drying cylinders, means to feed material between the drying cylinders and the feed rolls, means to scrape the material from the opposing sides of the feed rolls and cause it to drop between the drying cylinders, and means to subsequently scrape the material from the drying cylinders.

2. A pair of drying cylinders arranged to rotate in reverse directions, a pair of feed rolls arranged in spaced relation and each roll in contact with the upper side of one of the drying cylinders, means to feed material between the drying cylinders and the feed rolls, means to scrape the material from the opposing sides of the feed rolls and to cause it to drop between the drying cylinders, distributing rolls engaging the lower sides of the drying cylinders, and means to scrape the material from the upper sides of the drying cylinders at points near the feed rolls.

In Witness whereof I a .X my signature in presence of two witnesses.

JOHN MoIN TYRE.

Witnesses:

JOHN LIDDLE, J OHN TRAIN LIDDLE. 

